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NCT01602666 · OUTCOME

Estimation of the PFS Distribution of Patients With NGGCT Treated With Involved-field Radiation Therapy (IFR)

Chemotherapy Followed by Radiation Therapy in Treating Younger Patients With Newly Diagnosed Localized Central Nervous System Germ Cell Tumors · Source last updated 2025-11-20

Results reported by the registry submitting party. Population, time horizon, units and missing values must be read together.

Measure
NUMBER
Unit
percentage of patients
Interval / dispersion
95% Confidence Interval
Time frame
Up to 3 years

What was measured

Kaplan Meier estimate of the 3-year PFS is provided. PFS is the time interval measured from enrollment until progression or death from any cause or until last follow-up for those who were event free at the time of analysis. Patients who were lost to follow-up or withdrew consent were censored in this analysis. Progression was determined by MRI using the COG Guidelines for Measurement of Tumor Size (\>25% increase in 2D or \>40% in 3D of the product of perpendicular diameters of the target lesion) as well as by tumor marker assessments which were mandatory for this study.

Analysis population: Localized NGGCT treated with 30.6 Gy WVF RT + 23.4 Gy primary site boost. Patients must have had complete response (CR) or partial response (PR) to induction chemotherapy by MRI and markers; or underwent second-look surgery and were found to have mature teratoma, residual scar or fibrosis and fit the definition of CR/PR after second-look surgery.

Groups in this outcome

Stratum 1 Localized Non-Germinomatous Germ Cell Tumors (NGGCT)

Patients receive induction therapy comprising carboplatin intravenously (IV) over 15-60 minutes on day 1 and etoposide IV over 60-120 minutes on days 1-3 of courses 1, 3, and 5. Patients also receive ifosfamide IV over 60 minutes and etoposide over 60-120 minutes on days 1-5 of courses 2, 4, and 6. Treatment repeats every 21 days for 6 courses in the absence of disease progression or unacceptable toxicity. Patients achieving CR or PR undergo 3-dimensional conformal radiation therapy (3DRT) or intensity modulated radiation therapy (IMRT) once daily (QD) 5 days a week for 6 weeks. Patients with normalization of markers who fail to achieve CR or PR are strongly recommended to undergo second-look surgery. Patients who achieve CR or PR after second-look surgery undergo 3DRT or IMRT QD 5 days a week for 6 weeks.

Group identifiers and denominators belong to this outcome only. They may differ in another outcome or in safety reporting.

Analysis denominator · Participants

GroupSource count
Stratum 1 Localized Non-Germinomatous Germ Cell Tumors (NGGCT)66

Reported measurements

Source class 1
Values in percentage of patients · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Stratum 1 Localized Non-Germinomatous Germ Cell Tumors (NGGCT)87.88Not reported77.2293.75Not reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        77.22
        upper Limit
        93.75
        value
        87.88
denoms
  1. counts
    1. group Id
      OG000
      value
      66
    units
    Participants
description
Kaplan Meier estimate of the 3-year PFS is provided. PFS is the time interval measured from enrollment until progression or death from any cause or until last follow-up for those who were event free at the time of analysis. Patients who were lost to follow-up or withdrew consent were censored in this analysis. Progression was determined by MRI using the COG Guidelines for Measurement of Tumor Size (\>25% increase in 2D or \>40% in 3D of the product of perpendicular diameters of the target lesion) as well as by tumor marker assessments which were mandatory for this study.
dispersion Type
95% Confidence Interval
groups
  1. description
    Patients receive induction therapy comprising carboplatin intravenously (IV) over 15-60 minutes on day 1 and etoposide IV over 60-120 minutes on days 1-3 of courses 1, 3, and 5. Patients also receive ifosfamide IV over 60 minutes and etoposide over 60-120 minutes on days 1-5 of courses 2, 4, and 6. Treatment repeats every 21 days for 6 courses in the absence of disease progression or unacceptable toxicity. Patients achieving CR or PR undergo 3-dimensional conformal radiation therapy (3DRT) or intensity modulated radiation therapy (IMRT) once daily (QD) 5 days a week for 6 weeks. Patients with normalization of markers who fail to achieve CR or PR are strongly recommended to undergo second-look surgery. Patients who achieve CR or PR after second-look surgery undergo 3DRT or IMRT QD 5 days a week for 6 weeks.
    id
    OG000
    title
    Stratum 1 Localized Non-Germinomatous Germ Cell Tumors (NGGCT)
param Type
NUMBER
population Description
Localized NGGCT treated with 30.6 Gy WVF RT + 23.4 Gy primary site boost. Patients must have had complete response (CR) or partial response (PR) to induction chemotherapy by MRI and markers; or underwent second-look surgery and were found to have mature teratoma, residual scar or fibrosis and fit the definition of CR/PR after second-look surgery.
reporting Status
POSTED
time Frame
Up to 3 years
title
Estimation of the PFS Distribution of Patients With NGGCT Treated With Involved-field Radiation Therapy (IFR)
type
SECONDARY
unit Of Measure
percentage of patients

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Preserved source evidence · Not medical advice